136877786956 has 6 divisors (see below), whose sum is σ = 239536127180. Its totient is φ = 68438893476.

The previous prime is 136877786873. The next prime is 136877786957. The reversal of 136877786956 is 659687778631.

It is not an unprimeable number, because it can be changed into a prime (136877786957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17109723366 + ... + 17109723373.

Almost surely, 2^136877786956 is an apocalyptic number.

It is an amenable number.

136877786956 is a deficient number, since it is larger than the sum of its proper divisors (102658340224).

136877786956 is a wasteful number, since it uses less digits than its factorization.

136877786956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34219446743 (or 34219446741 counting only the distinct ones).

The product of its digits is 640120320, while the sum is 73.

The spelling of 136877786956 in words is "one hundred thirty-six billion, eight hundred seventy-seven million, seven hundred eighty-six thousand, nine hundred fifty-six".